Device for reclaiming used crankcase oils



April 27, 1937. c. w. TROXELL 1 2,078,818

v DEVICE FOR RECLAIMING USED CRANKCASE OILS Filed Sept.' 4, 193 1 Y z7-Z0 pl M Patented Apr. 27, 1937 UNITED STATES NT OFFIQE DEVICE FORRECLAIMING USED CRANKCASE OILS 2 Claims.

The invention relates to improvements means for reclaiming used crankcase oils.

An object of my invention is to re-claim the used crank case oil by theuse of acidulated clay.

Another object of my invention is to provide a device that will re-claimused crank case oils by heating the oil to the proper temperaturethereby separating the volatile non-lubricating elements from thelubricating oils without cracking or injuring the lubricating oils.

A still further object of my invention is to provide a device forre-claiming used crank case oil that is compact, simple in construction,economical to operate and efficient in its operation.

With the foregoing and other equally important objects and advantages inview, the invention resides in the certain new and useful combination,construction and arrangement of parts, as will be hereinafter more fullydescribed, set forth in the appended claims, and illustrated in theaccompanying drawing, in which:

The figure is a vertical section through an embodiment of the improvedmeans.

Referring now to the drawing, the embodiment of the invention, as isexemplified therein, is comprised in a cylindrically constructed housingI, having a convex strainer 2, laterally disposed near the upperextremity of the housing I. There are right angularly disposed flanges 3and 4, supporting the strainer 2, at its inner and outer edges as shown.A tubular member 5, acting as a filling means for the device projectsthrough the top of the housing I, and is shown closed at its upper endby a threaded cover 6. The lower end of the tube 5, supports the flanges3, which in turn supports the strainer 2. There is a conical shapeddeflector I, supportingly attached to the tubular member 8, by theangularly disposed brackets 9. A cone-shaped plate I0, smaller indiameter than the inside of the housing I, having an upwardly extendingretaining flange in which a plurality of apertures II, are arranged,encircles the tubular member 8, and another coneshaped plate I2, havingthe tubular member 8, as

an outlet in its apex, fastened at the circumfer l6, designates a cone-.

ly disposed for engaging the inner wall of the housing i, to form an oilchamber ll, in combination with the perforated plate I9, equipped withapertures 22, and joined at 26 and 2!, as shown. There is a screen 23,fastened to the plate IS], with screws 2Q. These parts I9 and 23, reston a filter paper or fabric 26, and the port I8, is sealed by the paper25, resting on the circular support 28, which has oil passages 27, andis securely attached to the convex bottom plate 28, which acts as atrap. There are attaching bolts 30, fastened on one end to the housingI, supporting the cross brace 3|, by means of threaded nuts. The brace3i, equipped with the flanged clamping screw 32, holds the concavebottom plate and its assembly in a fixed position.

The extreme top of the housing I, is provided with'a vapor outlet tube33, while the drain tube 34, leads from the oil chamber ll. Both thevapor outlet and drain tubes 33 and 34, respectively, are

provided with shut-off cocks or valves as shown. The vapor outlet tube33, terminates into a tubular spiral condenser coil 36, exhausting at37, enclosed in a cylindrically shaped casing 35. This casing 35, actsas a cooling means when filled with cold water or the like for the coil36, and has an inlet and outlet 38, and 39, respectively. The mainhousing I, has an air inlet Ml, to allow for pressureto be applied tothe device.

In operation a cloth or filter paper 26, with a port cut in the centerto leave the oil passage I8, unobstructed, is placed over the flanges ofthe concave bottom plate 28. This paper 26, also forms a gasket betweenthe plate l9, and the flanges 29, and rests against the. screen 23,fastened to plate I6, byscrews 24. The entire assembly is brought into asecure position by adjusting the screw 32, on the cross brace 3|, heldby the attaching bolts 36.

By removing the screw cap 6, the crank case oil may be poured into thecontainer I, until the oil level reaches a point immediately below theclay container Iii. The clay is placed onto the cone shaped containerI6, through the tube 5, and as the clay comes in contact with thedeflector I, the clay will be uniformly distributed onto the containerI0. The cap 6, is then placed into position. The valve in the vaporoutlet tube 33, is opened. While the valve in the outlet tube 34, isclosed.

The heating element, not shown, in the cylindrical chamber I4, madeoperative will cause the oil to rise in temperature thereby expandingand the oil will overflow through the tubular member 8, and over theclay on the container I0, causing a mixing of clay with the oil. Thismixture of clay and oil will drain off of the container I0, throughholes l l, and through the holes I3, on the cone l 2, reaching theextreme bottom of the container l, thereby completing circulation. Thisoperation of mixing the clay with the oil causes a foaming of the oil.The foam rising and contacting the screen 2, will cause the bubbles tobreak, leaving only the gases to reach the condenser coil 35, throughthe tube 33, and preventing any of the actual oil from entering thecondenser coil When the oil has reached the desired temperature belowthe cracking point of the oil it is ready to be filtered. The heatingelement is made inoperative. The valve in the tube 33, is closed. Thevalve in the drain tube 34, is opened. Air pressure is applied at theinlet 40. This pressure breaks the paper 25, in the outlet l8, allowingthe oil to pass through the ports 21, in the member 29, to the concavebottom plate 28. When the trap formed by the plate 23, is filled the oilis forced by means of the air pressure entering at 653, through thefilter paper 26, the screen 23, and the perforated plate 59, into theoil chamber H, where it flows by gravity through the outlet 3'3, and thelower spirals of the coil 36, through the outlet port 31.

In the chosen embodiments of my invention exemplified by theaccompanying drawing, there are present certain novel refinements andimprovements not heretofore disclosed in the prior art and which will behereinafter more fully referred to and specifically pointed out in theappended claims.

Although I have shown and described a particular construction of mydevice it is understood that I can make such changes as I may deemnecessary without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent in the UnitedStates, is:

1. A device of the character described comprising a container providedwith an inlet and outlet port, an oil reservoir disposed at the bottomof said container, said reservoir equipped with a ver tical tubularoverflow opening into said container, an annular clay receptaclesuspended from said tubular overflow and equipped with a plurality ofports in its upstanding peripheral plate, a heating element enclosuresuspended in said oil reservoir, temporary fragile sealing means forretaining the oil in said reservoir until broken by air pressure in thereservoir, a filtering chamber adjacent the bottom of said reservoir,filtering means separating said filtering chamber into two compartmentsallowing the oil to fiow from the lower to the upper compartment whenthe sealing means is broken, a condenser coil leading from a vaporoutlet in the container disposed for engagement with a coolingarrangement with means for allowing only the gases to pass to thecondenser coil, and an inlet at the top of the container to allowpressure to be applied to the inside of the container thereby breakingthe seal and permitting the oil to be forced downward from the oilreservoir through filtering means to the drain.

2. A device of the character described comprising a container providedwith an inlet and outlet port, an oil reservoir disposed at the bottomof said container, said reservoir equipped with a vertical tubularoverflow opening into said container, an annular clay receptaclesuspended from said tubular overflow and equipped with a plurality ofports in its upstanding peripheral plate, a heating element enclosuresuspended in said oil reservoir, temporary fragile sealing means forretaining the oil in said reservoir until broken by lower to the uppercompartment when the sealing means is broken, a condenser coil leadingfrom a vapor outlet in the container disposed for engagement with acooling arrangement with means for allowing only the gases to pass tothe condenser coil, an inlet at the top of the container to allowpressure to be applied to the inside of the container thereby breakingthe seal and permitting the oil to be forced downward from the oilreservoir through filtering means to the drain, and a removable clampingarrangement that will allow replacing of the seal and the filteringmeans, and removing the sludge from the filtering chamber.

CLARENCE WILLIAM TROXELL.

